Mark H Weaver <mhw@HIDDEN>
to control <at> debbugs.gnu.org.
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From: Mark H Weaver <mhw@HIDDEN>
To: Ian Price <ianprice90@HIDDEN>
Subject: Re: bug#14109: No code for 'bytevector->string' and
'string->bytevector'
References: <87li93uepl.fsf@HIDDEN> <87mwtibhho.fsf@HIDDEN>
Date: Mon, 01 Apr 2013 12:38:12 -0400
In-Reply-To: <87mwtibhho.fsf@HIDDEN> (Ian Price's message of "Mon, 01 Apr
2013 12:46:59 +0100")
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Ian Price <ianprice90@HIDDEN> writes:
> Nikita Karetnikov <nikita@HIDDEN> writes:
>
>> The mentioned functions are documented [1]. However, I'll get the
>> "Unbound variable" error if I try to import them:
>>
>> scheme@(guile-user)> ,use (rnrs io ports)
>> scheme@(guile-user)> string->bytevector
>> ;;; <unknown-location>: warning: possibly unbound variable `string->bytevector'
>> ERROR: In procedure #<procedure 8ab8bc0 ()>:
>> ERROR: In procedure module-lookup: Unbound variable: string->bytevector
>
> Even if they were available, it wouldn't do you much good, because the
> general transcoder functionality on ports isn't implemented.
Indeed, it would be good to implement this at some point.
> For the moment, the (rnrs bytevectors) module has string->utf8,
> string->utf16, and string->utf32 which are implemented. Though, this
> doesn't let you specify eol-style or handling-mode.
There's also Andy's shiny new (ice-9 iconv) module, which provides more
general iconv functionality and will make its debut in 2.0.8. It
contains 'string->bytevector' and 'bytevector->string', though beware
that they're not the same as the R6RS procedures, despite their names.
These are documented in section 6.6.5.13 of the manual in stable-2.0,
but were not in the index due to some broken texinfo markup which I just
fixed.
Mark
-- Scheme Procedure: string->bytevector string encoding
[conversion-strategy]
Encode STRING as a sequence of bytes.
The string will be encoded in the character set specified by the
ENCODING string. If the string has characters that cannot be
represented in the encoding, by default this procedure raises an
`encoding-error'. Pass a CONVERSION-STRATEGY argument to specify
other behaviors.
The return value is a bytevector. *Note Bytevectors::, for more on
bytevectors. *Note Ports::, for more on character encodings and
conversion strategies.
-- Scheme Procedure: bytevector->string bytevector encoding
[conversion-strategy]
Decode BYTEVECTOR into a string.
The bytes will be decoded from the character set by the ENCODING
string. If the bytes do not form a valid encoding, by default this
procedure raises an `decoding-error'. As with
`string->bytevector', pass the optional CONVERSION-STRATEGY
argument to modify this behavior. *Note Ports::, for more on
character encodings and conversion strategies.
-- Scheme Procedure: call-with-output-encoded-string encoding proc
[conversion-strategy]
Like `call-with-output-string', but instead of returning a string,
returns a encoding of the string according to ENCODING, as a
bytevector. This procedure can be more efficient than collecting a
string and then converting it via `string->bytevector'.
bug-guile@HIDDEN:bug#14109; Package guile.
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From: Ian Price <ianprice90@HIDDEN>
To: Nikita Karetnikov <nikita@HIDDEN>
Subject: Re: bug#14109: No code for 'bytevector->string' and
'string->bytevector'
References: <87li93uepl.fsf@HIDDEN>
Date: Mon, 01 Apr 2013 12:46:59 +0100
In-Reply-To: <87li93uepl.fsf@HIDDEN> (Nikita Karetnikov's message of
"Mon, 01 Apr 2013 07:12:06 +0400")
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Nikita Karetnikov <nikita@HIDDEN> writes:
> The mentioned functions are documented [1]. However, I'll get the
> "Unbound variable" error if I try to import them:
>
> scheme@(guile-user)> ,use (rnrs io ports)
> scheme@(guile-user)> string->bytevector
> ;;; <unknown-location>: warning: possibly unbound variable `string->bytevector'
> ERROR: In procedure #<procedure 8ab8bc0 ()>:
> ERROR: In procedure module-lookup: Unbound variable: string->bytevector
Even if they were available, it wouldn't do you much good, because the
general transcoder functionality on ports isn't implemented.
e.g.
scheme@(guile−user)> (open-bytevector-input-port
(string->utf8 "foobarbaz")
(make-transcoder (utf-8-codec)))
GNU Guile: warning: transcoders not implemented
$5 = #<input: r6rs−bytevector−input−port ae46b40>
Maybe we could stub these, since they are mentioned in the info file[0],
and warn about them not being implemented like we do e.g. with
open-bytevector-input-port.
For the moment, the (rnrs bytevectors) module has string->utf8,
string->utf16, and string->utf32 which are implemented. Though, this
doesn't let you specify eol-style or handling-mode.
0. This documentation is lifted straight from the R6RS (modulo
formatting).
--
Ian Price -- shift-reset.com
"Programming is like pinball. The reward for doing it well is
the opportunity to do it again" - from "The Wizardy Compiled"
bug-guile@HIDDEN:bug#14109; Package guile.
Full text available.Received: (at submit) by debbugs.gnu.org; 1 Apr 2013 04:38:11 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Apr 01 00:38:11 2013 Received: from localhost ([127.0.0.1]:55170 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1UMWVW-00062f-E1 for submit <at> debbugs.gnu.org; Mon, 01 Apr 2013 00:38:10 -0400 Received: from eggs.gnu.org ([208.118.235.92]:60429) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from <nikita@HIDDEN>) id 1UMVBo-000420-MY for submit <at> debbugs.gnu.org; Sun, 31 Mar 2013 23:13:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <nikita@HIDDEN>) id 1UMV90-0002Uu-FG for submit <at> debbugs.gnu.org; Sun, 31 Mar 2013 23:10:53 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,T_MIME_NO_TEXT autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([208.118.235.17]:35059) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <nikita@HIDDEN>) id 1UMV90-0002Up-9P for submit <at> debbugs.gnu.org; Sun, 31 Mar 2013 23:10:50 -0400 Received: from eggs.gnu.org ([208.118.235.92]:43548) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <nikita@HIDDEN>) id 1UMV8s-00012C-J5 for bug-guile@HIDDEN; Sun, 31 Mar 2013 23:10:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <nikita@HIDDEN>) id 1UMV8m-0002U6-Et for bug-guile@HIDDEN; Sun, 31 Mar 2013 23:10:42 -0400 Received: from li305-5.members.linode.com ([178.79.168.5]:41237 helo=cooksoni.karetnikov.org) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <nikita@HIDDEN>) id 1UMV8m-0002Tz-9K for bug-guile@HIDDEN; Sun, 31 Mar 2013 23:10:36 -0400 From: Nikita Karetnikov <nikita@HIDDEN> To: bug-guile@HIDDEN Subject: No code for 'bytevector->string' and 'string->bytevector' Date: Mon, 01 Apr 2013 07:12:06 +0400 Message-ID: <87li93uepl.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha1; protocol="application/pgp-signature" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 208.118.235.17 X-Spam-Score: -4.2 (----) X-Debbugs-Envelope-To: submit X-Mailman-Approved-At: Mon, 01 Apr 2013 00:38:08 -0400 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -6.9 (------) --=-=-= Content-Transfer-Encoding: quoted-printable The mentioned functions are documented [1]. However, I'll get the "Unbound variable" error if I try to import them: scheme@(guile-user)> ,use (rnrs io ports)=20 scheme@(guile-user)> string->bytevector ;;; <unknown-location>: warning: possibly unbound variable `string->bytevec= tor' ERROR: In procedure #<procedure 8ab8bc0 ()>: ERROR: In procedure module-lookup: Unbound variable: string->bytevector (I haven't found them via 'grep' too.) I'm using Guile 2.0.7. [1] https://gnu.org/software/guile/manual/guile.html#R6RS-Transcoders --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQIcBAEBAgAGBQJRWPtDAAoJEM+IQzI9IQ38O8wP/30dfU8loPxs9W5BF3A/5TWP Wb7R1gBGcy7vLQK6FCU4han3plBeFrbNLf+M6LJKK4TUn5y+6zeSG5IKw315vS1x 0v/tJsjjwerKTwEwiNbvwAHUtHsGwNIBS+WkNMD2+JIr/dOTbphHw0J/lmE6uRiE eyzqyi0xV3XQobsRNjlGUY4m6Mtco9VomIjCdMJ4LIm1jUfdiY3+Pj87QkOzfl09 ERAKyiNDybjE4fhSPoN9zPGUOAP1XQAF4sromksOIb2hP5aUkkqjJHYsKcco83j/ shYtV/badlAVqS/4JvyNUgPqopUvu6SaNettUjp6NDcEqE5eU6jLBHmFjlz/2vdI Vx4vG2NvkBIyBZrl73ejpPVecbycy9JwE6G8T32PD2rW3bcX83YbEFNKqk/kLWsl ghuVNRhRJpergibunYg2iVC1rlmI0a9tmQ3NYTG8vWJL1sTWBs6m9tGQhu90kiRL +8j5ox5jxp/wfmGPGfSc1RxwQ59k6VN6cLKOcK1/DjD54EzXLzUu2krMiVMgmAze KK49KncmMh991eUcF9w+hB0OIp/XLirIfEmVQKke9uGtIO++97+kb8FDMD4+F4c6 PFxTbIZcowHlxaClO7qpoWZDu1WdpYpOpH32jCXmfCYsVvL8jKNM+CsMdK4Y49nR 4no6vGjNnS6mJMXAH96Q =Jop7 -----END PGP SIGNATURE----- --=-=-=--
Nikita Karetnikov <nikita@HIDDEN>:bug-guile@HIDDEN.
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